WO2022080088A1 - 炭化水素の製造方法 - Google Patents
炭化水素の製造方法 Download PDFInfo
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- WO2022080088A1 WO2022080088A1 PCT/JP2021/034373 JP2021034373W WO2022080088A1 WO 2022080088 A1 WO2022080088 A1 WO 2022080088A1 JP 2021034373 W JP2021034373 W JP 2021034373W WO 2022080088 A1 WO2022080088 A1 WO 2022080088A1
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- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 43
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 43
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 36
- 239000003054 catalyst Substances 0.000 claims description 41
- 238000006243 chemical reaction Methods 0.000 claims description 41
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- 238000000034 method Methods 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 12
- 230000003197 catalytic effect Effects 0.000 abstract description 10
- 238000003786 synthesis reaction Methods 0.000 abstract description 10
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 16
- 239000007789 gas Substances 0.000 description 12
- 238000011084 recovery Methods 0.000 description 9
- 239000010881 fly ash Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 239000007795 chemical reaction product Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000001157 Fourier transform infrared spectrum Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 2
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- 150000003839 salts Chemical class 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 208000033962 Fontaine progeroid syndrome Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- AOPCKOPZYFFEDA-UHFFFAOYSA-N nickel(2+);dinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O AOPCKOPZYFFEDA-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2/00—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
- C10G2/50—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon dioxide with hydrogen
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/02—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of a carbon
- C07C1/12—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of a carbon from carbon dioxide with hydrogen
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- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/755—Nickel
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/19—Catalysts containing parts with different compositions
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/396—Distribution of the active metal ingredient
- B01J35/397—Egg shell like
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
- B01J35/45—Nanoparticles
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
- B01J37/088—Decomposition of a metal salt
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2/00—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
- C10G2/30—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen
- C10G2/32—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts
- C10G2/33—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts characterised by the catalyst used
- C10G2/331—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts characterised by the catalyst used containing group VIII-metals
- C10G2/332—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts characterised by the catalyst used containing group VIII-metals of the iron-group
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2/00—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
- C10G2/30—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen
- C10G2/32—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts
- C10G2/33—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts characterised by the catalyst used
- C10G2/331—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts characterised by the catalyst used containing group VIII-metals
- C10G2/333—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts characterised by the catalyst used containing group VIII-metals of the platinum-group
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Definitions
- the present application relates to a method in which CO 2 on the ground is reduced and valuable resources are obtained by converting CO 2 stored in the ground into solid or liquid hydrocarbons.
- Patent Document 1 A system is known in which CO 2 is dissolved in a solvent and pressed into an aquifer in the ground to store and sequester CO 2 (Patent Document 1).
- CO 2 dissolved water can be stored in the ground at a concentration close to the saturated concentration.
- CO 2 may leak to the ground.
- the emergence of technology that suppresses the leakage of CO 2 stored in the ground to the ground is desired.
- An object of the present application is to provide a method for suppressing CO 2 leakage to the ground by synthesizing a hydrocarbon from water and CO 2 in the ground.
- CO 2 is introduced into a storage point in the ground where water and a catalytic metal are present, a pressure of 5 MPa or more and a temperature of 40 ° C or more, and CO 2 is put into a subcritical state or supercritical state. It has an introduction step to bring it into a critical state and a synthesis step to synthesize a hydrocarbon by reacting water in water with CO 2 in a subcritical state or a supercritical state at a storage point.
- CO 2 is introduced by introducing catalyst particles having a catalyst metal and CO 2 into a storage point in the ground where moisture is present, the pressure is 5 MPa or more, and the temperature is 40 ° C. or more. It has an introduction step of putting the carbon dioxide into a subcritical state or a supercritical state, and a synthesis step of reacting water in water with CO 2 in the supercritical state to synthesize a hydrocarbon at a storage point.
- CO 2 introduced into the ground reacts with water in the surrounding water to generate a hydrocarbon, so that it is difficult to leak to the ground. Further, according to the present application, it can be used as a valuable resource by extracting the hydrocarbon generated in the ground.
- the method for producing a hydrocarbon according to the embodiment of the present application includes an introduction step and a synthesis step.
- the introduction step CO 2 is introduced into a storage point in the ground where water and a catalytic metal are present and the pressure is 5 MPa or more and the temperature is 40 ° C. or more to bring CO 2 into a subcritical state or a supercritical state.
- CO 2 is introduced into a storage point in the ground where moisture and catalytic metal are present and CO 2 is in a subcritical or supercritical state.
- CO 2 can be introduced, for example, by connecting the ground and the storage point with a pipe and press-fitting using this pipe.
- This reservoir is, for example, a gap, crack, or hole in a stratum or rock formation.
- Moisture may be rainwater or surface water that has permeated underground from the surface of the earth and is stored in gaps, cracks, holes, etc. of the stratum or rock layer, or in metal salt hydrate existing in the ground. It may be water of crystallization such as the water component of.
- the catalyst metal exists in the stratum or the rock layer as the composition of the mineral, or adheres to the gaps, cracks, or pores of the stratum or the rock layer. From the viewpoint of storing CO 2 at the storage point, it is preferable that the CO 2 introduced into the ground is a gas or a liquid.
- the storage point where CO 2 is in a subcritical state or a supercritical state is, for example, a temperature of 40 ° C. or higher and a pressure of 8 MPa or higher.
- a point 800 m or more and 1200 m or less underground can be used as a storage point without being aware of the presence of water and catalytic metal, as well as temperature and pressure. If CO 2 is introduced into such a storage point, CO 2 will be in a subcritical state or a supercritical state, and the environment for the synthesis process will be prepared.
- hydrocarbons are synthesized by reacting water in water with CO 2 in a subcritical state or a supercritical state at a storage point.
- This synthesis step proceeds by leaving it unattended after the introduction step, i.e., over time.
- This synthesis time may be several years to several hundred years.
- CO 2 introduced into the ground is converted into hydrocarbons, so that it is unlikely to leak to the ground.
- the hydrocarbon obtained in the synthesis step is a liquid or a solid, there is almost no possibility of leakage to the ground.
- the method for producing a hydrocarbon of the present embodiment may further include a recovery step of recovering the hydrocarbon from the storage point to the ground.
- the catalyst metal is preferably a metal that promotes the Fischer-Tropsch reaction.
- the Fischer - Tropsch reaction is a reaction in which a hydrocarbon is synthesized from H2 and CO using a catalyst.
- the inventor of the present application has found that hydrocarbons can be obtained by using CO 2 instead of CO under a predetermined environment. Therefore, according to the method for producing a hydrocarbon of the present embodiment, it is possible to reduce CO 2 emitted in various industries and which is a cause of global warming.
- Examples of the catalyst metal for advancing the Fischer-Tropsch reaction include Ni, Fe, Co, Pd, Cu, Ag, and Zn.
- the catalyst metal is preferably one or more of Ni, Fe, Co, and Pd. This is because hydrocarbons can be obtained efficiently.
- the catalyst metal may be supported on a carrier such as ceramics or activated carbon in the state of a metal or a metal salt.
- water is considered to function as an H2 source, and subcritical or supercritical CO 2 is considered to function as a CO source.
- Conceivable That is, in the presence of a catalytic metal that promotes the Fischer-Tropsch reaction, by reacting water with CO 2 in a subcritical state or a supercritical state, H 2 is supplied from water and CO is supplied from CO 2 , respectively, and Fischer. -The Tropus reaction produces hydrocarbons from H 2 and CO.
- CO 2 is introduced into a storage point in the ground where water and a catalyst metal are present, the pressure is 5 MPa or more, and the temperature is 40 ° C. or more, and the CO 2 is put into a subcritical state or a supercritical state. ..
- catalyst particles and CO 2 having a catalyst metal are introduced into a storage point in the ground where moisture is present, the pressure is 5 MPa or more, and the temperature is 40 ° C. or more, and for example, the catalyst particles and CO are introduced. 2 may be press-fitted at the same time to bring CO 2 into a subcritical state or a supercritical state.
- catalyst particles and CO 2 having the catalyst metal are introduced into a storage point in the ground where water and the catalyst metal are present, the pressure is 5 MPa or more, and the temperature is 40 ° C. or more, and the CO 2 is placed in a subcritical state or a supercritical state. It may be.
- the catalyst particles have a shape with high fluidity so as not to interfere with the diffusion of the catalyst particles into the pores.
- shape having high fluidity a spherical shape, a shape having few protrusions, or a shape having small particles is preferable. This is because the reaction between water at the storage point and CO 2 in the subcritical state or the supercritical state can be promoted by introducing the catalyst particles containing the catalyst metal into the storage point together with CO 2 .
- the catalyst particles are preferably a core-shell nanoparticle catalyst provided with a core as a nanoparticle carrier and a shell as a catalyst metal so as to have a shape with high fluidity. This is because the small size of the catalyst particles allows the catalyst particles to be delivered to the storage point via a pipe connecting the ground and the storage point.
- the particle size of the nanoparticle carrier is, for example, 10 nm to 500 nm.
- Examples of the nanoparticle carrier include silica nanoparticles and alumina nanoparticles.
- Such a core-shell nanoparticle catalyst can be prepared, for example, by the method described in Japanese Patent No. 6303499.
- Fly ash which is said to have high fluidity, can also be used as the catalyst particles to be introduced at the storage point.
- Fly ash is a by-product of coal-fired power plants, and the inorganic substances contained in the raw material coal excavated from the ground are melted during the combustion process. And the shape of fly ash is spherical.
- fly ash contains a catalyst metal such as Fe or Ni depending on the production area of coal. In order to improve the catalytic performance of fly ash, it is also effective to make the surface zeolite.
- Zeolitization of the surface of fly ash is described in, for example, "Physical property evaluation of potassium hydrothermally synthesized from coal ash fly ash” (Resources and Materials Magazine, Vol.119, p.125-129, (2003)). It can be carried out by the method described.
- FIG. 1 schematically shows a reaction device 10 which is a model of a storage point and a recovery device 12 for recovering a hydrocarbon generated by the reaction device 10.
- the reaction apparatus 10 includes a reaction vessel 14, a heater 16 provided around the reaction vessel 14, a pressure gauge P and a thermometer T connected to the reaction vessel 14. Hydrocarbons are synthesized from water and subcritical CO 2 or supercritical CO 2 in the presence of the catalytic metal in the reaction vessel 14.
- the heater 16 maintains the inside of the reaction vessel 14 at a predetermined temperature, for example, 40 ° C. or higher and 50 ° C. or lower.
- a pipe for introducing subcritical CO 2 or supercritical CO 2 and a valve 18 are connected to the reaction vessel 14.
- a heater 16 is also installed around the piping from the valve 18, the pressure gauge P, and the thermometer T to the reaction vessel 14. Between the valve 18 and the reaction vessel 14, a valve 20 for making the reaction apparatus 10 independent and a filter 22 for preventing the solid content generated in the reaction vessel 14 from flowing into the recovery apparatus 12 are provided. There is. There was no heater 16 around the filter 22, and in this embodiment, the temperature around the filter 22 was about 15 ° C.
- the recovery device 12 includes a valve 24 for recovering the synthesized hydrocarbon, a trap 28 containing deuterated chloroform 26, a trap 32 provided with cooling means 30 around it, and a gas sampling bag 34. ..
- Example 1 Hydrocarbon synthesis (Example 1) 9. Dried porous ⁇ -alumina pellets (manufactured by Wako Pure Chemical Industries, Ltd.) in 24 mL of a 10 wt% nickel nitrate aqueous solution prepared using nickel (II) nitrate hexahydrate (manufactured by Wako Pure Chemical Industries, Ltd.). 0 g was immersed, impregnated with a rotary evaporator and dried. The ⁇ -alumina pellets impregnated with nickel nitrate are calcined in air at 800 ° C. for 3 hours, and further reduced in a hydrogen atmosphere at 550 ° C.
- the catalyst metal Ni is added to the carrier ⁇ -Al 2 O 3 .
- the catalyst particles on which the above was carried were prepared.
- Ni is a metal that promotes the Fischer-Tropsch reaction.
- 4.0 g of the catalyst particles and 2 mL of pure water were placed in a stainless steel reaction vessel 14 having a capacity of 30 mL.
- valve 24 With the valve 24 closed, supercritical CO 2 was introduced from the valve 18 into the reaction vessel 14.
- the valve 20 was closed, the temperature inside the reaction vessel 14 was kept at 40 ° C. and the pressure was 8.8 MPa, and water and supercritical CO 2 were reacted for 5 days.
- the valves 18 With the valves 18 closed, the valves 20 and 24 were opened and the reaction products were recovered in the reaction vessel 14, the filters 22, the traps 28 and 32, and the gas sampling bag 34.
- the trap 32 was cooled by a cooler (which can be cooled to ⁇ 80 ° C.) using ethanol as a cooling medium.
- Example 2 Water and supercritical CO 2 were reacted in the same manner as in Example 1 except that 2.0 g of catalyst particles and 1 mL of pure water were used and the pressure inside the reaction vessel 14 was maintained at 8.9 MPa. The reaction product was collected.
- FIG. 3 is a chromatogram of the residue in the reaction vessel 14.
- FIG. 4 is a chromatogram of deposits on the filter 22.
- FIG. 5 is a chromatogram of the deuterated chloroform solution in the trap 28.
- FIG. 6 is a chromatogram of deposits in the trap 32.
- FIG. 7 is a chromatogram of the gas in the gas sampling bag 34. As shown in FIGS. 3 to 7, the peak of C 30 H 62 was detected in the reaction products present at all sites. That is, it was found that C30-based hydrocarbons were synthesized by this example. The carbon number corresponding to the peak at each retention time is based on the GCMS analysis peak of the standard sample which is a mixture of alkanes from C 10 H 22 to C 38 H 78 .
- FIG. 8 shows the chromatograms of FIGS. 3 to 7 side by side. It was found that a series of long-chain alkane-based hydrocarbons from C 13 H 28 to C 38 H 78 was present in the gas of the reaction product. That is, it was found that hydrocarbons can be synthesized by reacting water with supercritical CO 2 in the presence of a catalytic metal.
- Reaction device 10 Reaction device 12 Recovery device 14 Reaction vessel 16 Heater 18, 20, 24 Valve 22 Filter 26 Double chloroform 28, 32 Trap 30 Cooling means 34 Gas sampling bag P Pressure gauge T Thermometer
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Abstract
Description
(実施例1)
硝酸ニッケル(II)六水和物(富士フイルム和光純薬製)を用いて調製した10wt%硝酸ニッケル水溶液24mL中に、乾燥させた多孔質γ-アルミナペレット(富士フイルム和光純薬製)9.0gを浸漬し、ロータリーエバポレータで含浸・乾燥させた。この硝酸ニッケルが含浸されたγ-アルミナペレットを、800℃の空気中で3時間焼成し、さらに550℃の水素雰囲気中で3時間還元処理して、担体γ-Al2O3に触媒金属Niが担持された触媒粒子を調製した。なお、Niは、フィッシャー・トロプシュ反応を進行させる金属である。容量30mLのステンレス製の反応容器14に、この触媒粒子4.0gと純水2mLを入れた。
2.0gの触媒粒子および1mLの純水を用いた点と、反応容器14内を圧力8.9MPaに保った点を除いて、実施例1と同様にして、水と超臨界CO2を反応させ、反応生成物を回収した。
触媒粒子を用いなかった点と、反応容器14内を圧力8.1MPaに保った点を除いて、実施例2と同様にして、水と超臨界CO2の反応と反応生成物の回収を試みた。
(実施例1の生成物の分析)
実施例1の反応後、フィルター22に黒色固形物が付着していた。フーリエ変換赤外分光光度計(FT-IR)装置(株式会社島津製作所製、IR Affinity-1)を用いて、この黒色固形物をFT-IR分析した。図2にこのFT-IRスペクトルを示す。図2に示すように、2925±15cm-1と2850±15cm-1に-CH2-のC-H伸縮振動に起因するピークが観測された。また、2870±15cm-1に-CH3のC-H伸縮振動に起因するピークが観測された。これらの結果から、この黒色固形物には、長鎖状のアルカン系炭化水素が含まれていると考えられる。
実施例2の反応後には、黒色固形物がフィルター22と配管内に付着していた。実施例2の反応後の反応容器14内の残留物とフィルター22の付着物を重クロロホルムで抽出した。この重クロロホルム溶液のGCMS分析により、C30系炭化水素が存在することが確認された。
反応容器14内の残留物とフィルター22の付着物として、透明な液滴だけが観察された。これらの液滴を重クロロホルムで抽出してGCMS分析した。この結果、反応容器14内の残留物とフィルター22の付着物からは、重クロロホルムだけが検出された。すなわち、触媒金属が存在しなければ、水と超臨界CO2から炭化水素が生成しないことがわかった。
12 回収装置
14 反応容器
16 ヒーター
18,20,24 バルブ
22 フィルター
26 重クロロホルム
28,32 トラップ
30 冷却手段
34 ガスサンプリングバッグ
P 圧力計
T 温度計
Claims (7)
- 水分および触媒金属が存在し、圧力5MPa以上、温度40℃以上の地中の貯留地点にCO2を導入して、CO2を亜臨界状態または超臨界状態にする導入工程と、
前記貯留地点で、前記水分中の水と前記亜臨界状態または超臨界状態のCO2を反応させて炭化水素を合成する合成工程と、
を有する炭化水素の製造方法。 - 水分が存在し、圧力5MPa以上、温度40℃以上の地中の貯留地点に、触媒金属を備える触媒粒子とCO2を導入して、CO2を亜臨界状態または超臨界状態にする導入工程と、
前記貯留地点で、前記水分中の水と前記亜臨界状態または超臨界状態のCO2を反応させて炭化水素を合成する合成工程と、
を有する炭化水素の製造方法。 - 請求項2において、
前記触媒粒子が、ナノ粒子担体であるコアと、前記触媒金属であるシェルを備える炭化水素の製造方法。 - 請求項1から3のいずれかにおいて、
前記触媒金属が、フィッシャー・トロプシュ反応を進行させる金属である炭化水素の製造方法。 - 請求項1から4のいずれかにおいて、
前記貯留地点が、地下800m以上1200m以下の地点である炭化水素の製造方法。 - 請求項1から5のいずれかにおいて、
前記触媒金属が、Ni、Fe、Co、およびPdの一種以上である炭化水素の製造方法。 - 請求項1から6のいずれかにおいて、
前記貯留地点の圧力が8MPa以上である炭化水素の製造方法。
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0780309A (ja) * | 1993-09-16 | 1995-03-28 | Agency Of Ind Science & Technol | 炭化水素製造用触媒及び炭化水素の製造方法 |
JP2000104078A (ja) * | 1998-09-30 | 2000-04-11 | Chiyoda Corp | 炭素ガスを含む低級炭化水素ガスから液体炭化水素油を製造する方法 |
JP2010119962A (ja) * | 2008-11-20 | 2010-06-03 | National Institute Of Advanced Industrial Science & Technology | 二酸化炭素の浅帯水層貯留 |
JP2015077575A (ja) * | 2013-10-18 | 2015-04-23 | 岩谷産業株式会社 | 炭化水素合成触媒、それを用いた炭化水素製造装置、炭化水素製造方法 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0780309A (ja) * | 1993-09-16 | 1995-03-28 | Agency Of Ind Science & Technol | 炭化水素製造用触媒及び炭化水素の製造方法 |
JP2000104078A (ja) * | 1998-09-30 | 2000-04-11 | Chiyoda Corp | 炭素ガスを含む低級炭化水素ガスから液体炭化水素油を製造する方法 |
JP2010119962A (ja) * | 2008-11-20 | 2010-06-03 | National Institute Of Advanced Industrial Science & Technology | 二酸化炭素の浅帯水層貯留 |
JP2015077575A (ja) * | 2013-10-18 | 2015-04-23 | 岩谷産業株式会社 | 炭化水素合成触媒、それを用いた炭化水素製造装置、炭化水素製造方法 |
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